During the building process, you will be unable to adjust the name and description of the workout. Both of these are auto-generated. The reasons are twofold.
First, it keeps people from building duplicate workouts. If you attempt to build a workout that already exists on btwb, the site/app will return you that workout.
Second, it helps users find workouts more easily and keeps workouts standardized across the site.
Gym admins will be able to attach a custom title to a planned WOD that only their Gym's members will be able to see from their calendars. The default name will remain the same though for the rest of btwb's users.